28377-97-1Relevant articles and documents
Diamine monomer containing carborane structure, dianhydride monomer containing carborane structure and preparation method and application of diamine monomer and dianhydride monomer containing carborane structure
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Paragraph 0058-0066; 0143-0144; 0149-0150; 0155-0156; ..., (2021/07/21)
The invention discloses a diamine monomer containing a carborane structure, a dianhydride monomer containing a carborane structure and a preparation method and application of the diamine monomer and the dianhydride monomer. The invention also discloses high-temperature-resistant polyimide containing the carborane structure. The polyimide is prepared by condensation polymerization of the diamine monomer containing the carborane structure and a dianhydride monomer containing the carborane structure. The preparation method comprises the following steps: taking decaborane and alkyne as initial raw materials, preparing a carborane structural unit through addition reaction of the decaborane and the alkyne, and then preparing the diamine monomer containing the carborane structure through nitration reaction and reduction reaction, or preparing the dianhydride monomer containing the carborane structure through oxidation and dehydrating reaction of methyl. The method for preparing the diamine monomer or dianhydride monomer containing the carborane structure has the advantages of simple operation, wide universality, convenient and easily available raw materials, high yield and the like, and is convenient for large-scale production.